From Table 2 it is apparent that one saves only $2.87 per acre by making 

 an application of the NAA-2,4,5-TA combination as compared to two NAA applications. 

 If the NAA-2,4,5-TA combination is 2 or 3 per cent less effective than two NAA 

 sprays in drop control, the use of the combination represents a loss of 10 to 15 

 boxes of fruit on a block producing 500 boxes per acre or a 20 to 30 box loss in 

 a block yielding 1000 boxes per acre. When apples are worth $2 a box only 1.5 

 boxes of apples need to be saved by the double NAA spray to pay the extra cost of 

 a second spray. Consequently, if two NAA sprays are consistently a per cent or 

 more superior to the single spray (NAA-2,4,5-TA combination), two sprays of NAA 

 represent a more economical proposition. We are assuming that airplane service 

 is available on a 24 to 48-hour notice. 



It should be remembered that every now and then delaying the second NAA 

 spray for a full 10 days may coincide with a very warm period and a sharp increase 

 in fruit loss may occur for a couple of days before the second application becomes 

 effective. In such a situation the one spray combination may be as effective as 

 the two NAA sprays over the full three week period for Mcintosh. 



F. W. Southwick 



II I I I I I I I I I I I I 



PERFORMANCE OF HARDY ROOTSTOCKS IN QUEBEC 



This past August I had the opportunity to observe hardy rootstocks in the 

 Frelighsburg area of Quebec which is about 45 miles north of Burlington, Vermont. 

 That area has had in the past few years three test winters with temperatures of 

 35 to 40 degrees below zero. Mcintosh trees on standard roots have suffered severe 

 winter injury to the trunk and scaffold branches. Many trees are practically dead. 

 Trees topworked on hardy rootstocks such as Hibernal, Robusta #5, Garnet Crab and 

 Antonovka showed no evidence of winter injury and were making excellent growth. 



The preferred stock is Robusta #5. It is easily propagated in stool beds, 

 vigorous, and trees topworked on it come into production at an early age. Trees 

 on Robusta #5 are also very tolerant of wet soil conditions. 



Practically all new plantings in that area of Quebec are being topworked to 

 Robusta #5. The only disadvantage I can see in this stock is that it is so vigor- 

 ous that it may be difficult to keep the tree from getting too large. 



W. D. Weeks 



I I I I I I I I I I I I I I I I 



REVISED APPLE GRADING LAW — A HELP TO THE INDUSTRY 



The revised Massachusetts Apple Grading Law is a help to apple growers in 

 reaching three major objectives: (1) the building of an active demand through 

 advertising and sales promotion, (2) the development of adequate outlets, and (3) 

 the elimination of sub-market prices. 



